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The relationship between meteorological factors and mumps incidence in Guangzhou, China, 2005-2012:
Qiongying Yang1, Zhicong Yang, Haiyuan Ding
1a School of Public Health and Tropical Medicine; Southern Medical University; Guangzhou, PR China.
Background:
Over the past decade, there have been resurgences and large-scale outbreaks of mumps worldwide. Little evidence is available on the relationship between meteorological factors and the incidence of mumps. We aimed to explore the effects of meteorological factors on mumps incidence.
Methods:
A Poisson regression model combined with a distributed lag non-linear model (DLNM) was used to evaluate the association between meteorological factors and the mumps incidence in Guangzhou, China, 2005-2012.
Results:
Nonlinear relationships between meteorological factors, except sunshine hours, and mumps incidence were observed. The relative risks (RRs) of mean temperature, relative humidity and atmospheric pressure were 1.81 (95% confidence interval (CI), 1.41 to 2.32), 1.28 (95% CI, 1.02 to 1.59), and 0.80 (95% CI, 0.67 to 0.95) comparing the 99th percentile to the median of their own, respectively. For wind velocity, the RR was 0.70 (95%CI, 0.54 to 0.91) comparing the 1st percentile to the median. The hot effect and cold effect were larger in females than in males, and the hot effect increased with age.
Conclusions:
Mean temperature, relative humidity, wind velocity and atmospheric pressure might be important predictors of the mumps incidence. Tropical cyclone caused a higher increase in mumps cases. Our findings highlight the need to strengthen the awareness of using protective measures during typhoon days and allocating more attention to the susceptible populations during the summer. The two-dose regimen of mumps vaccine should be included in the National Immunization Program schedule, and the catch-up vaccination campaigns should be promoted among adults.
Insights
Meteorological factors like temperature and humidity influence mumps outbreaks. Protective measures during typhoons and vaccination are crucial for susceptible populations.
Area of Science:
- Epidemiology
- Environmental Health
- Infectious Disease Dynamics
Background:
- Global mumps outbreaks necessitate understanding contributing factors.
- Limited research exists on meteorological influences on mumps incidence.
Purpose of the Study:
- To investigate the association between meteorological factors and mumps incidence in Guangzhou, China.
Main Methods:
- A Poisson regression model combined with a distributed lag non-linear model (DLNM) was employed.
- Data from Guangzhou, China, spanning 2005-2012 were analyzed.
Main Results:
- Nonlinear relationships were found between mumps incidence and mean temperature, relative humidity, atmospheric pressure, and wind velocity.
- Higher temperatures and humidity increased mumps risk, while higher atmospheric pressure and wind velocity decreased it.
- Adverse weather events like tropical cyclones correlated with increased mumps cases, with greater impact on females and older individuals.
Conclusions:
- Mean temperature, humidity, wind velocity, and atmospheric pressure are significant predictors of mumps incidence.
- Public health strategies should include enhanced protective measures during typhoon seasons and targeted vaccination campaigns for vulnerable groups.
- Incorporating a two-dose mumps vaccination schedule into national programs and promoting adult catch-up vaccinations are recommended.
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